Uploaded June 2021 | Updated September 2026, 2 weeks ago

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Anyone who has tried to learn a language knows that there are a million different learning systems and methods out there, and a million different people trying to sell them to you. But after a while you will probably notice one idea that everyone seems to believe in, and that is the importance of input, based on the input hypothesis of Stephen Krashen. But does this idea have any evidence, or any value for learners?
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Do you think I'm wrong? Want more scientific evidence? Watch this: youtu.be/DJWCjn1hwy4
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